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U.S. patents issued to Thomas A. Edison from 1883-88 (1900)
United States. Patent Office, Edison, Thomas A. (Thomas Alva), 1847-1931 · [Washington, D.C.] : The Office · leaf 480
(No Model.) T. A. EDISON. INCANDESCENT ELECTEIC LAMP. Patented May 12, 1885, No. 317,632. … JFJ^^ d ^^^ aj\ '^ f -cv TPP '^y^.y^L^^-j^Patents
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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